a974e5b8ab
After the ciphertext UPDATE succeeds in editEncryptedMessage, delete the existing message_mentions rows for that message then re-resolve and re-insert from the new plaintext — matching the best-effort pattern used by insertMessage. No signature change needed; conversationId and newPlaintext were already present in EditMessageParams. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>